The PE19XP5001 from Pasternack Enterprises Inc is a Phase Locked Oscillator with Frequency 100 MHz, Output Power 5 to 9 dBm, Reference Power 4 to 10 dBm, Reference Frequency 10 MHz, Supply Voltage 5 V. Tags: Surface Mount, PLXO. More details for PE19XP5001 can be seen below.